Document And Entity Information - USD ($)	12 Months Ended
	Dec. 31, 2017	Jan. 25, 2018	Jun. 30, 2017
Document And Entity Information [Abstract]
Entity Registrant Name	NETFLIX INC
Entity Central Index Key	0001065280
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Document Type	10-K/A
Document Period End Date	Dec. 31, 2017
Document Fiscal Year Focus	2017
Document Fiscal Period Focus	FY
Amendment Flag	true
Amendment Description	This Amendment No. 1 is being filed solely to include the phrase “and the related notes (collectively referred to as the “financial statements”)” inadvertently omitted from the “Report of Independent Registered Public Accounting Firm” in Part II, Item 8 of the Original Filing. The sentence now reads: “We have audited the accompanying consolidated balance sheets of Netflix, Inc. (the Company) as of December 31, 2017 and 2016, and the related consolidated statements of operations, comprehensive income, stockholders’ equity and cash flows for each of the three years in the period ended December 31, 2017, and the related notes (collectively referred to as the “financial statements").”
Entity Common Stock, Shares Outstanding		433,948,461
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Public Float			$ 54,917,149,461